Contacts- gives you an ability to send POs to suppliers straight from Precoro and order delivery status in email. You need to add the supplier's manager, that receives POs, specifically his/her email

Terms of payment - if you also use Receiving and PaymentRequest functional, terms of payment definitely will help. They will not only give you the info regarding payment terms, they will also automatically choose the first action after creating PO: if there's postpayment, you first receive, than pay; if there's prepayment, you first pay, then receive in Precoro